all of these animals have special adaptations that allow them to thrive in some of the most deadly environments on earth. thank you for watching. and remember, every day is an exploration. announcer: closed captioning provided by... jen's car wasn't handling well. so i brought it to mike at meineke. we gave her car a free road handling check. i like free. free is good. my money. my choice. my meineke. and less saturated fat? easy. it's eb. eggland's best. better eggs. it's eb. trust icy hot for powerful relief. [ male announcer ] the icy hot patch. goes on icy to dull pain, hot to relax it away. so you're back to full speed. [ male announcer ] icy hot. power past pain. sandy: however, now they're classified as extinct, but they are well-represented in mexico and south america. jarod: sandy, there's one right there. they're not extinct. i'll bet i just discovered a new specie. sandy: did i say extinct? [laughter]. jarod: so, sandy, tell me... [sandy laughs]. sandy: cut! [laughs]. okay. jarod: are you ready? sandy: uh-huh. jarod: you got the giggles out? sandy: i'm cool. [laughter]. jarod: drivin